SUSE SLED15 / SLES15 Security Update : kernel (SUSE-SU-2020:0836-1)

low Nessus Plugin ID 135166

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VPR Score: 5.2

Synopsis

The remote SUSE host is missing one or more security updates.

Description

The SUSE Linux Enterprise 15-SP1 kernel was updated to receive various security and bugfixes.

The following security bugs were fixed :

CVE-2020-8647: Fixed a use-after-free in the vc_do_resize function in drivers/tty/vt/vt.c (bsc#1162929).

CVE-2020-8649: Fixed a use-after-free in the vgacon_invert_region function in drivers/video/console/vgacon.c (bsc#1162931).

CVE-2020-8648: Fixed a use-after-free in the n_tty_receive_buf_common function in drivers/tty/n_tty.c (bsc#1162928).

CVE-2020-9383: Fixed an out-of-bounds read due to improper error condition check of FDC index (bsc#1165111).

CVE-2019-19768: Fixed a use-after-free in the __blk_add_trace function in kernel/trace/blktrace.c (bnc#1159285).

The update package also includes non-security fixes. See advisory for details.

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or 'zypper patch'.

Alternatively you can run the command listed for your product :

SUSE Linux Enterprise Workstation Extension 15-SP1:zypper in -t patch SUSE-SLE-Product-WE-15-SP1-2020-836=1

SUSE Linux Enterprise Module for Open Buildservice Development Tools 15-SP1:zypper in -t patch SUSE-SLE-Module-Development-Tools-OBS-15-SP1-2020-836=1

SUSE Linux Enterprise Module for Live Patching 15-SP1:zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP1-2020-836=1

SUSE Linux Enterprise Module for Legacy Software 15-SP1:zypper in -t patch SUSE-SLE-Module-Legacy-15-SP1-2020-836=1

SUSE Linux Enterprise Module for Development Tools 15-SP1:zypper in -t patch SUSE-SLE-Module-Development-Tools-15-SP1-2020-836=1

SUSE Linux Enterprise Module for Basesystem 15-SP1:zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP1-2020-836=1

SUSE Linux Enterprise High Availability 15-SP1:zypper in -t patch SUSE-SLE-Product-HA-15-SP1-2020-836=1

Plugin Details

Severity: Low

ID: 135166

File Name: suse_SU-2020-0836-1.nasl

Version: 1.3

Type: local

Agent: unix

Family: SuSE Local Security Checks

Published: 4/2/2020

Updated: 1/13/2021

Dependencies: 12634

Risk Information

Risk Factor: Low

VPR Score: 5.2

CVSS Score Source: CVE-2020-9383

CVSS v2.0

Base Score: 3.6

Temporal Score: 2.7

Vector: AV:L/AC:L/Au:N/C:P/I:N/A:P

Temporal Vector: E:U/RL:OF/RC:C

CVSS v3.0

Base Score: 7.1

Temporal Score: 6.2

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Temporal Vector: E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:novell:suse_linux:kernel-debug, p-cpe:/a:novell:suse_linux:kernel-debug-base, p-cpe:/a:novell:suse_linux:kernel-debug-base-debuginfo, p-cpe:/a:novell:suse_linux:kernel-debug-debuginfo, p-cpe:/a:novell:suse_linux:kernel-debug-debugsource, p-cpe:/a:novell:suse_linux:kernel-debug-devel, p-cpe:/a:novell:suse_linux:kernel-debug-devel-debuginfo, p-cpe:/a:novell:suse_linux:kernel-debug-livepatch-devel, p-cpe:/a:novell:suse_linux:kernel-default, p-cpe:/a:novell:suse_linux:kernel-default-base, p-cpe:/a:novell:suse_linux:kernel-default-base-debuginfo, p-cpe:/a:novell:suse_linux:kernel-default-debuginfo, p-cpe:/a:novell:suse_linux:kernel-default-debugsource, p-cpe:/a:novell:suse_linux:kernel-default-devel, p-cpe:/a:novell:suse_linux:kernel-default-devel-debuginfo, p-cpe:/a:novell:suse_linux:kernel-default-livepatch, p-cpe:/a:novell:suse_linux:kernel-default-man, p-cpe:/a:novell:suse_linux:kernel-kvmsmall, p-cpe:/a:novell:suse_linux:kernel-kvmsmall-base, p-cpe:/a:novell:suse_linux:kernel-kvmsmall-base-debuginfo, p-cpe:/a:novell:suse_linux:kernel-kvmsmall-debuginfo, p-cpe:/a:novell:suse_linux:kernel-kvmsmall-debugsource, p-cpe:/a:novell:suse_linux:kernel-kvmsmall-devel, p-cpe:/a:novell:suse_linux:kernel-kvmsmall-devel-debuginfo, p-cpe:/a:novell:suse_linux:kernel-kvmsmall-livepatch-devel, p-cpe:/a:novell:suse_linux:kernel-obs-build, p-cpe:/a:novell:suse_linux:kernel-obs-build-debugsource, p-cpe:/a:novell:suse_linux:kernel-obs-qa, p-cpe:/a:novell:suse_linux:kernel-syms, p-cpe:/a:novell:suse_linux:kernel-vanilla, p-cpe:/a:novell:suse_linux:kernel-vanilla-base, p-cpe:/a:novell:suse_linux:kernel-vanilla-base-debuginfo, p-cpe:/a:novell:suse_linux:kernel-vanilla-debuginfo, p-cpe:/a:novell:suse_linux:kernel-vanilla-debugsource, p-cpe:/a:novell:suse_linux:kernel-vanilla-devel, p-cpe:/a:novell:suse_linux:kernel-vanilla-devel-debuginfo, p-cpe:/a:novell:suse_linux:kernel-vanilla-livepatch-devel, p-cpe:/a:novell:suse_linux:kernel-zfcpdump-debuginfo, p-cpe:/a:novell:suse_linux:kernel-zfcpdump-debugsource, p-cpe:/a:novell:suse_linux:kernel-zfcpdump-man, p-cpe:/a:novell:suse_linux:kselftests-kmp-default, p-cpe:/a:novell:suse_linux:kselftests-kmp-default-debuginfo, p-cpe:/a:novell:suse_linux:reiserfs-kmp-default, p-cpe:/a:novell:suse_linux:reiserfs-kmp-default-debuginfo, cpe:/o:novell:suse_linux:15

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/SuSE/release, Host/SuSE/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 3/31/2020

Vulnerability Publication Date: 12/12/2019

Reference Information

CVE: CVE-2019-19768, CVE-2020-8647, CVE-2020-8648, CVE-2020-8649, CVE-2020-9383